Just to mention the Magnepan 20.7 and 30.7 both the bass and midrange panels are magnets BOTH sides... Plus the Mylar is tensioned rather tight... Compared to earlier 20s (true earlier 20's the magnets only one side on midrange)

Just to mention the Magnepan 20.7 and 30.7 both the bass and midrange panels are magnets BOTH sides... Plus the Mylar is tensioned rather tight... Compared to earlier 20s (true earlier 20's the magnets only one side on midrange)

Danny, I hear you repeatedly saying no, so I will accept that you do not want to publish those plots. Your speakers, your forum, your decision, your right of refusal.

As for your description of Maggies, one clarification, the larger Maggies have dual-sided push-pull magnet arrangements (e.g. like the 20.1's and 20.7's mentioned in this thread as well as their new 30.7's and possibly others).

I was aware of the characteristics of the Neos because I have been considering them for a while because of the Tympani mods. I have looked at the BG, the Chinese Sounderlink AMT knockoffs that use the Kapton membranes and also read the threads on your yarn-damped NEO3s.

Danny, I hear you repeatedly saying no, so I will accept that you do not want to publish those plots. Your speakers, your forum, your decision, your right of refusal.

It is not that I don't want to post them. I don't take them, because I can't get any data from a spectral decay of a room. It doesn't tell me anything about the speaker. And like I said before. I can just adjust the volume to make the spectral decay of the room look great or horrible. There is no standard for that.

It is not that I don't want to post them. I don't take them, because I can't get any data from a spectral decay of a room. It doesn't tell me anything about the speaker. And like I said before. I can just adjust the volume to make the spectral decay of the room look great or horrible. There is no standard for that.

Hi Danny, If you took frequency response measurements (like in REW), you already have the waterfall and spectogram information recorded. Whether you look at them or not is another matter, but they are in your .mdat or equivalent files.

As for volume levels, there are general volume levels @ 75dB-80dB or you simply state what volume the measurements were taken at so the reader can interpret accordingly. How you plot the waterfall is where the games start to happen (e.g. only showing just a few dB off the top, excessive smoothing and not identifying the smoothing level, or truncating the bottom of the plot to hide when ringing starts).

Hi Danny, If you took frequency response measurements (like in REW), you already have the waterfall and spectogram information recorded. Whether you look at them or not is another matter, but they are in your .mdat or equivalent files.

As for volume levels, there are general volume levels @ 75dB-80dB or you simply state what volume the measurements were taken at so the reader can interpret accordingly. How you plot the waterfall is where the games start to happen (e.g. only showing just a few dB off the top, excessive smoothing and not identifying the smoothing level, or truncating the bottom of the plot to hide when ringing starts).

Again, that would not be an actual speaker measurement. That's a room measurement. And there is no reference for taking them. So they could literally look like anything. And it won't reflect what the speaker is doing or tell you anything about the speaker.

That would be like telling how fast my car is and then taking a picture of the road.

Again, that would not be an actual speaker measurement. That's a room measurement. And there is no reference for taking them. So they could literally look like anything. And it won't reflect what the speaker is doing or tell you anything about the speaker.

That would be like telling how fast my car is and then taking a picture of the road.

I would think it would tell a little more than what you are letting on.

I can understand Danny's point I really never thought if it his way, but with a moment's reflecton, yeah, he is right, it really is just the room interaction with the speaker. and one could make it do almost anything by putzing with the room. I could see if there was one special room, standard, right down to how the walls are made, how the floor is made , the ceiling.. the size, what is in it as an industry wide standard. I think the lure of it is that there 'must be' some information that is useful, but Danny is saying in reality, not much can be used BECAUSE the room swamps everything meaningful.That is my understanding of the problem.

I can understand Danny's point I really never thought if it his way, but with a moment's reflecton, yeah, he is right, it really is just the room interaction with the speaker. and one could make it do almost anything by putzing with the room. I could see if there was one special room, standard, right down to how the walls are made, how the floor is made , the ceiling.. the size, what is in it as an industry wide standard. I think the lure of it is that there 'must be' some information that is useful, but Danny is saying in reality, not much can be used BECAUSE the room swamps everything meaningful.That is my understanding of the problem.

I can understand Danny's point I really never thought if it his way, but with a moment's reflecton, yeah, he is right, it really is just the room interaction with the speaker. and one could make it do almost anything by putzing with the room. I could see if there was one special room, standard, right down to how the walls are made, how the floor is made , the ceiling.. the size, what is in it as an industry wide standard. I think the lure of it is that there 'must be' some information that is useful, but Danny is saying in reality, not much can be used BECAUSE the room swamps everything meaningful.That is my understanding of the problem.

Luckily, there IS a room that meets all these requirements and is already an industry standard - it's called an anechoic chamber

Luckily, there IS a room that meets all these requirements and is already an industry standard - it's called an anechoic chamber

Taking these measurements in room, no gating is great for dialing in speaker placement , room treatment etc but they aren't going to tell anything about the speaker on it's own so looking at something person a post in room is absolutely irrelevant to how the same measurement would look in person b's room.

To me it remeinds me of watching you-tube videos of speakers through another set of speakers and saying " wow, those sound great" Yeah, you'tube vids of speakers are cool to watch, I enjoy them to, but just as above, won't really give you any idea of how they'll sound

Taking these measurements in room, no gating is great for dialing in speaker placement , room treatment etc but they aren't going to tell anything about the speaker on it's own so looking at something person a post in room is absolutely irrelevant to how the same measurement would look in person b's room.

To me it remeinds me of watching you-tube videos of speakers through another set of speakers and saying " wow, those sound great" Yeah, you'tube vids of speakers are cool to watch, I enjoy them to, but just as above, won't really give you any idea of how they'll sound

jay

Actually, it's more akin to "auditioning" a singular piece of equipment at a dealer or show. One person is "hearing" the speakers. The next is "hearing" the amp. Another is "hearing" the power cables. No one is "hearing" the room (because you can't buy a room). In reality, unbeknownst to all, the amazing sound is because of a small bowl of crystals 3-rooms over.